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发明名称
Telecommunication exchange
摘要
申请公布号
GB645867(A)
申请公布日期
1950.11.08
申请号
GB19460033980
申请日期
1946.11.15
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H04Q3/52;H04Q11/04
主分类号
H04Q3/52
代理机构
代理人
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